Radio frequency sensing with multi-segment sensing signal

Abstract

A radio frequency sensing method includes: obtaining, at an apparatus, a sensing signal configuration of a sensing signal in response to a request for radio frequency sensing, the sensing signal configuration indicating a first segment with a monotonically increasing frequency over a first length of time, indicating a second segment with a monotonically decreasing frequency over a second length of time, and indicating a third segment with a monotonically changing frequency over a third length of time that is shorter than the first length of time and the second length of time; and transmitting the sensing signal configuration from the apparatus, or transmitting the sensing signal from the apparatus, or transmitting the sensing signal configuration and the sensing signal from the apparatus, or receiving and measuring the sensing signal at the apparatus, or any combination of two or more thereof.

1 . An apparatus comprising:
 one or more transceivers;   one or more memories; and   one or more processors, communicatively coupled to the one or more transceivers and the one or more memories;   wherein:
 the one or more processors are configured to obtain a sensing signal configuration of a sensing signal in response to a request for radio frequency sensing, the sensing signal configuration indicating a first segment of the sensing signal with a monotonically increasing frequency over a first length of time, indicating a second segment of the sensing signal with a monotonically decreasing frequency over a second length of time, and indicating a third segment of the sensing signal with a monotonically changing frequency over a third length of time that is shorter than the first length of time and the second length of time; and 
 the one or more processors are configured to transmit, via the one or more transceivers, the sensing signal configuration, or the one or more processors are configured to transmit, via the one or more transceivers, the sensing signal, or the one or more processors are configured to transmit, via the one or more transceivers, the sensing signal configuration and the sensing signal, or the one or more processors are configured to receive, via the one or more transceivers, and measure the sensing signal. 
   
     
     
         2 . The apparatus of  claim 1 , wherein the sensing signal configuration indicates a fourth segment of the sensing signal with a constant frequency over a fourth length of time. 
     
     
         3 . The apparatus of  claim 2 , wherein the one or more processors are configured to determine a velocity of a target object based on a first beat frequency based on a first measurement of the first segment of the sensing signal, a second beat frequency based on a second measurement of the second segment of the sensing signal, a third beat frequency based on a third measurement of the fourth segment of the sensing signal, and a range from a source of the sensing signal to the target object based on a fourth measurement of the third segment of the sensing signal. 
     
     
         4 . The apparatus of  claim 2 , wherein the one or more processors are configured to transmit the sensing signal and the one or more processors are configured to:
 obtain a communication signal configuration that indicates a communication signal for transmission during at least a portion of the fourth length of time; and   transmit, via the one or more transceivers and in accordance with the communication signal configuration, the communication signal during the at least a portion of the fourth length of time.   
     
     
         5 . The apparatus of  claim 2 , wherein the sensing signal configuration indicates that the first length of time, the second length of time, the third length of time, and the fourth length of time are all within a single orthogonal frequency division multiplexed slot. 
     
     
         6 . The apparatus of  claim 1 , wherein the sensing signal configuration indicates that the first segment of the sensing signal, the second segment of the sensing signal, and the third segment of the sensing signal each span a same range of frequencies. 
     
     
         7 . The apparatus of  claim 1 , wherein the sensing signal configuration indicates that the first segment of the sensing signal has a linearly increasing frequency over the first length of time, that the second segment of the sensing signal has a linearly decreasing frequency over the second length of time, and that the third segment of the sensing signal has a linearly changing frequency over the third length of time. 
     
     
         8 . The apparatus of  claim 1 , wherein the one or more processors are configured to determine the sensing signal configuration based on one or more range quality parameters or based on one or more velocity quality parameters or based on a combination of the one or more range quality parameters and the one or more velocity quality parameters. 
     
     
         9 . The apparatus of  claim 1 , wherein the sensing signal configuration provides frequency continuity of the sensing signal between consecutive segments of the sensing signal. 
     
     
         10 . A radio frequency sensing method comprising:
 obtaining, at an apparatus, a sensing signal configuration of a sensing signal in response to a request for radio frequency sensing, the sensing signal configuration indicating a first segment of the sensing signal with a monotonically increasing frequency over a first length of time, indicating a second segment of the sensing signal with a monotonically decreasing frequency over a second length of time, and indicating a third segment of the sensing signal with a monotonically changing frequency over a third length of time that is shorter than the first length of time and the second length of time; and   transmitting the sensing signal configuration from the apparatus, or transmitting the sensing signal from the apparatus, or transmitting the sensing signal configuration and the sensing signal from the apparatus, or receiving and measuring the sensing signal at the apparatus, or any combination of two or more thereof.   
     
     
         11 . The radio frequency sensing method of  claim 10 , wherein the sensing signal configuration indicates a fourth segment of the sensing signal with a constant frequency over a fourth length of time. 
     
     
         12 . The radio frequency sensing method of  claim 11 , further comprising determining a velocity of a target object based on a first beat frequency based on a first measurement of the first segment of the sensing signal, a second beat frequency based on a second measurement of the second segment of the sensing signal, a third beat frequency based on a third measurement of the fourth segment of the sensing signal, and a range from a source of the sensing signal to the target object based on a fourth measurement of the third segment of the sensing signal. 
     
     
         13 . The radio frequency sensing method of  claim 11 , wherein the radio frequency sensing method comprises transmitting the sensing signal, the radio frequency sensing method further comprising:
 obtaining, at the apparatus, a communication signal configuration that indicates a communication signal for transmission during at least a portion of the fourth length of time; and   transmitting, from the apparatus in accordance with the communication signal configuration, the communication signal during the at least a portion of the fourth length of time.   
     
     
         14 . The radio frequency sensing method of  claim 11 , wherein the sensing signal configuration indicates that the first length of time, the second length of time, the third length of time, and the fourth length of time are all within a single orthogonal frequency division multiplexed slot. 
     
     
         15 . The radio frequency sensing method of  claim 10 , wherein the sensing signal configuration indicates that the first segment of the sensing signal, the second segment of the sensing signal, and the third segment of the sensing signal each span a same range of frequencies. 
     
     
         16 . The radio frequency sensing method of  claim 10 , wherein the sensing signal configuration indicates that the first segment of the sensing signal has a linearly increasing frequency over the first length of time, that the second segment of the sensing signal has a linearly decreasing frequency over the second length of time, and that the third segment of the sensing signal has a linearly changing frequency over the third length of time. 
     
     
         17 . The radio frequency sensing method of  claim 10 , wherein obtaining the sensing signal configuration comprises determining the sensing signal configuration based on one or more range quality parameters or based on one or more velocity quality parameters or based on a combination of the one or more range quality parameters and the one or more velocity quality parameters. 
     
     
         18 . The radio frequency sensing method of  claim 10 , wherein the sensing signal configuration provides frequency continuity of the sensing signal between consecutive segments of the sensing signal. 
     
     
         19 . An apparatus comprising:
 means for obtaining a sensing signal configuration of a sensing signal in response to a request for radio frequency sensing, the sensing signal configuration indicating a first segment of the sensing signal with a monotonically increasing frequency over a first length of time, indicating a second segment of the sensing signal with a monotonically decreasing frequency over a second length of time, and indicating a third segment of the sensing signal with a monotonically changing frequency over a third length of time that is shorter than the first length of time and the second length of time; and   means for transmitting the sensing signal configuration from the apparatus, or means for transmitting the sensing signal from the apparatus, or means for transmitting the sensing signal configuration and the sensing signal from the apparatus, or means for receiving and measuring the sensing signal at the apparatus, or any combination of two or more thereof.   
     
     
         20 . The apparatus of  claim 19 , wherein the sensing signal configuration indicates a fourth segment of the sensing signal with a constant frequency over a fourth length of time. 
     
     
         21 . The apparatus of  claim 20 , further comprising means for determining a velocity of a target object based on a first beat frequency based on a first measurement of the first segment of the sensing signal, a second beat frequency based on a second measurement of the second segment of the sensing signal, a third beat frequency based on a third measurement of the fourth segment of the sensing signal, and a range from a source of the sensing signal to the target object based on a fourth measurement of the third segment of the sensing signal. 
     
     
         22 . The apparatus of  claim 20 , wherein the apparatus comprises the means for transmitting the sensing signal, the apparatus further comprising:
 means for obtaining a communication signal configuration that indicates a communication signal for transmission during at least a portion of the fourth length of time; and   means for transmitting, in accordance with the communication signal configuration, the communication signal during the at least a portion of the fourth length of time.   
     
     
         23 . The apparatus of  claim 20 , wherein the sensing signal configuration indicates that the first length of time, the second length of time, the third length of time, and the fourth length of time are all within a single orthogonal frequency division multiplexed slot. 
     
     
         24 . The apparatus of  claim 19 , wherein the sensing signal configuration indicates that the first segment of the sensing signal, the second segment of the sensing signal, and the third segment of the sensing signal each span a same range of frequencies. 
     
     
         25 . A non-transitory, processor-readable storage medium comprising processor-readable instructions to cause one or more processors of an apparatus to:
 obtain a sensing signal configuration of a sensing signal in response to a request for radio frequency sensing, the sensing signal configuration indicating a first segment of the sensing signal with a monotonically increasing frequency over a first length of time, indicating a second segment of the sensing signal with a monotonically decreasing frequency over a second length of time, and indicating a third segment of the sensing signal with a monotonically changing frequency over a third length of time that is shorter than the first length of time and the second length of time; and   transmit the sensing signal configuration from the apparatus, or transmit the sensing signal from the apparatus, or transmit the sensing signal configuration and the sensing signal from the apparatus, or receive and measure the sensing signal at the apparatus, or any combination of two or more thereof.   
     
     
         26 . The non-transitory, processor-readable storage medium of  claim 25 , wherein the sensing signal configuration indicates a fourth segment of the sensing signal with a constant frequency over a fourth length of time. 
     
     
         27 . The non-transitory, processor-readable storage medium of  claim 26 , further comprising processor-readable instructions to cause the one or more processors to determine a velocity of a target object based on a first beat frequency based on a first measurement of the first segment of the sensing signal, a second beat frequency based on a second measurement of the second segment of the sensing signal, a third beat frequency based on a third measurement of the fourth segment of the sensing signal, and a range from a source of the sensing signal to the target object based on a fourth measurement of the third segment of the sensing signal. 
     
     
         28 . The non-transitory, processor-readable storage medium of  claim 26 , wherein the processor-readable instructions comprise the processor-readable instructions to cause the one or more processors to transmit the sensing signal, the non-transitory, processor-readable storage medium further comprising processor-readable instructions to cause the one or more processors to:
 obtain a communication signal configuration that indicates a communication signal for transmission during at least a portion of the fourth length of time; and   transmit, in accordance with the communication signal configuration, the communication signal during the at least a portion of the fourth length of time.   
     
     
         29 . The non-transitory, processor-readable storage medium of  claim 26 , wherein the sensing signal configuration indicates that the first length of time, the second length of time, the third length of time, and the fourth length of time are all within a single orthogonal frequency division multiplexed slot. 
     
     
         30 . The non-transitory, processor-readable storage medium of  claim 25 , wherein the sensing signal configuration indicates that the first segment of the sensing signal, the second segment of the sensing signal, and the third segment of the sensing signal each span a same range of frequencies.